Analytical Industries GPR-1600 MS Series PPB Oxygen Analyzer - Manual (Page 25)

Advanced Instruments Inc.
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8. The display will not shift automatically. Instead, when the oxygen reading (actually the sensor’s signal output) exceeds
110% of the upper limit of the current range an OVER RANGE warning will be displayed.
9. Once the OVER RANGE warning appears the user must advance the analyzer to the next higher range via the menu and
keypad Press MENU, select MANUAL SAMPLING, press ENTER, select the appropriate MANUAL RANGE and press ENTER
again.
Alarms
The CONFIG ALARMS features a system that can be configured in the field. Two field adjustable alarm relays with dry contacts
operate independently of one another which means the alarms can be set-up as:
¾ HI and LO
¾ LO and LO, LO,
¾ HI and HI,HI
Additional feature includes delaying the activation of the local audible alarm and relay contacts for up 99 minutes to enable
users to distinguish between transient occurrences and true upset conditions which is particularly useful on remote applications
without affecting the 4-20mA signal output. The local audible alarm can be silenced or disabled as well without affecting the 4-
20mA signal output.
Note: A separate feature, BYPASS ALARMS described below, enables the user to disable the local audible alarm and relay
contacts during calibration or servicing. The alarms are enabled when the alarm condition is corrected.
Note: If the “Range ID with Relay Contacts” option is specified, the alarm feature is eliminated, see above.
Set Alarm Values:
1. Access the MAIN MENU by pressing the MENU key.
2. Advance the reverse shade cursor using the ARROW keys to highlight CONFIG ALARMS.
3. Press the ENTER key to select the highlighted menu option.
4. The following displays appears:
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATION
CONFIG ALARMS
BYPASS ALARMS
>>>
MAIN MENU
SET ALARM 1
SET ALARM 2
SET ALARM DELAY
ALARM 1 HI/LO
ALARM 2 HI/LO
ALARMS AUDIBLE/SILENT
5. Advance the reverse shade cursor using the ARROW keys to highlight the SET ALARM 1 option.
6. Press the ENTER key to select the highlighted menu option.
7. The following displays appears with PERCENT as the default alarm value :
MAIN MENU
SET ALARM 1
SET ALARM 2
SET ALARM DELAY
ALARM 1 HI/LO
ALARM 2 HI/LO
ALARMS AUDIBLE/SILENT >>>
GAS CONCENTRATION
PERCENT
PPM
8. Advance the reverse shade cursor using the ARROW keys to highlight the desired option.
9. Press the ENTER key to select the highlighted menu option.
10. Note: The PERCENT alarm value is entered with one decimal, the PPM alarm value is entered as an integer.